Braiding-machine carrier



Aug. 6, 1929. R. w. HALE 1,723,159

BRAIDING MACHINE CARRIER Eiled March 21, 1928 2 Sheets-Sheet 1 Aug. 6, 1929. R HALE 1,723,159

BRAIDING MACHINE CARRIER Filed March 21, 1928 2 Sheets-Sheet 2 m /9 Y Invenior:

Patented Aug. 5, 1929.

11 Q'FFIQE.

ZR'EIAL'E, OF *ILFLRTFORD, Gil-Nil BEAIDING-MACHIHE Application filed March 2-1, 19:28.

, track or braiding machine with certain. of the carriers in transverse section;

Fig. 2- is an elevation of one of the carriers to. which my invention particularly relates Fi 3 is an elevation viewed from position at ninety degrees from Fig. 2;

Fig. l is an elevation looking at the inside of the upright portion of the carrier, the bobbin being omitted;

Fig. 5 is a vertical section on the line 55 of Fig. 3. looking toward the left;

l 6 is a horizontal section on the line 66 of Fig. 3 lookin down; and

Fig. 7 isan under side view of the bobbin showing the formations for-engagement of the double pawl. I

A braiding carrier is provided with boc y portion. whereon the yarn supply is carried generally upon a bobbin, and a bearing or guiding surface which cooperates with. other parts of the braiding machine, for exau'iple the r toting quoits and the fixed portions 01": the body structure.

Referring to the accompanying drawings, I have in Fig. 1 represented at 1 the framing of the machine, and at 2 certain of the so-. called quoits which so far as mypresent in-, *ention is concerned may be of any suitable construction. The carriers travel in, the raceway provided between the framing and the peripheral edges of the quoits, and each is provided with a lower formation generally indicated at 8, and which is 01" the form adapted to the particular type of braiding machine with which the carrier of myinvention is employed. In the present embodiment of my invention, the upper part of the formation 3. is relatively large and flat, as indicated at 4L, being of general elliptical form. Thcrc'from rises the spindle 5 whereon is received the yarn or thread sup ply 6. Desirably the yar supply is carried upon a bobbin which. may be of usual conruction excepting that its base 7 is furiished with or has secured thereto a part 8 spaced teeth or formations 9, each of which .s here shown as parallel sided and adapted for engagement of so-called double pawls, whereby the bobbin or thread holder of the yarn or thread supply is positively held in both directions from movement of rotation immediately after each feed of yarn or thread until iurth "feeding of the yarn or thread permitted. This insures the feeding of the yarn or thread always in a taut condition and so prevents over-feeding of the yarn or thread and any consequei-it Pl The base member 4: is

mackness thereof. provided upon its upper face at one end with upwardly extending ears 10 in vertical sockets whereof are positioned the ends of a. wire 11 bent into a general hairpin shape providing parallel members dcsi *ably circular in cross section, upon which the tl read tensioning member may slide. Desirably the upper end of the wire 11 is bent as indicated at 12, so as to permit the thread to feed thcreover. 1

The yarn extends from the package or supply 6 through an eye 13 downwardly about a projection 13, thence upwardly along the notch 12 and thence through tic hooked end 14: of the spindle 6 to the point of: use. The guide 13 is provided upon one of the upright members of the wire 11. The parallel members oi, said wire 11 receive the tension or wire feeding member 15, which. is here shown having an upright body part 16 of sheet metal. Upon the outer face of the body part 16 is provided the projection 13 about which the yarn or thread is guided. At. the upper portion thereof the sheet metal is wider and is bent inward, as indicated at 17, 17, to prov de guides encircling the two upright members of the wire 11. At its lower end the bod-y portion 16 is shown as having secured thereto a strip 18, the ends of which are bent inward as indicated at 19 to encircle the parallel parts of the wire 11, and preferably the lower portion of the body part 6 is itself widened and bent inward to form guides similar to those indicated at 1.7. The tensio member 15. is normally held down by a coil spring indicated at 20, the upper end whereof is attached to an inrovid-cd with circumferentially arranged,

turned part or formation 21 centrally positioned at the upper edge of the body portion 16. At its lower end the said coil spring 20 is secured, as shown most clearly in Fig. 5, to a hook or eye 22 secured in the part at between the ears 10. Thus, the spring 20 is positioned b tween the parallel members of the wire 11 and is protected thereby.

Encircling the two members of the wire 11 are wire eyes 23, 23 formed at the upper ends of two wires 24, 2st respectively. The two wires 2 1, 24 are passed through holes in two pawls respectively indicated at 26, 2?, whereby upward movementof the said wires 24-, 2 1' lifts the ends of said pawls to which the wires are connected. Preferably the eye 23 is slightly lower than the eye 23, and as the eye 23 is connected to the forward pawl 26, which is the leading pawl, in the direction of rotation, it follows that said pawl 26 is released slightly sooner than the pawl 27, which is connected to the eye 23. The said pawls lie in a horizontal position and are pivoted on a pivotal pin 28 in a hub or upstanding ear 29 rising from the upper edge of the part l. Said hub 29 is provided on its upper face with two slots 30 within which are received and housed the two pawls 26, 2'7. Said pawls at their ends opposite their point of connection to the wires 24, 2 1 are provided with teeth or heads 81, 32 respectively, here shown as extending inwardly toward each other, so as to engage the opposite edges of any one tooth 9 0f the part 8. The space between the inner edges of the said teeth 31, 32 is just suiiicient to permit the reception of any one tooth 9. Positioned in suitable sockets 33 in the part 4 are short, light, coiled springs 25% which engage the under edges of the pawls 26, 27 and tend to hold down the member 16 so to prevent circumferential movement of the thread mass or supply in either direction.

In view of the foregoing construction, it is impossible for the thread mass either to wind up on itself or to unwind for the following reasons:

In describing the operation, it is to be understood that there is a carrier (or plurality thereof) travelling toward the left and a carrier (or plurality thereof) is travelling toward the right; that is, one or more going clockwise and the other or others contraclockwise. Referring to the carrier which goes in a clockwise path (assun'iing the carrier to be in front of the observer with the pawls toward him), the yarn is prevented from unwinding by the engagement of the left hand pawl with the side of a tooth of the toothed part 8 caused by the downward movement of the tension member as the supply of yarn is let off. This act-ion of engagement is entirely independent of that of the right hand pawl, which remains in a downward position until the said part 8 has wise direction.

reached a point where the right hand pawl snaps up into engagement instantly. At that time, both the pawls are engaging a single tooth, one at one side and one at the other side of said tooth. After this engagement, when yarn is to be let off again, the left hand pawl drops slightly before the right hand pawl, which allows the yarn package to revolve in a clockwise direction only, as at this point the right hand pawl has not entirely become disengaged.

The foregoing description is concerned with a carrier which is travelling in a clockhe reverse conditions would occur with a bobbin travelling in a contraclockwise direction.

Vhen travelling in a clockwise path, the left hand pawl is the let-off pawl and the right hand pawl is the wind-up pawl. When travellin in a contraclockwise path, just the opposite conditions prevail.

In the manufacture of high grade braids or in the manufacture of braid made from very fine till'GfiLS, it is necessary to prevent any yanking effect whatsoever onthe yarn strands. The described positive pawl action, in preventing the wind-up of the thread package, always delivers the yarn at the same tension and so there are no irregularities in the tension of the yarn or in the yarn itself.

My invention in its broadest aspect is not limited to a construction wherein the socalled wind-up pawl is connected to the tension member, as it will be understood that the main function of the wind-up pawl is to prevent the yarn mass from turning in a wind-up direction. The disclosed construction permits the machine operator very conveniently to manipulate both pawls so as to wind up slack yarn when she replenishes the yarn supply.

It will be evident from the foregoing description that the yarn mass or package is held positively from any movement in either direction of rotation until the tension upon the yarn or thread is such that the member 15 is elevated, thereby releasing both pawls and permitting a slight turning movement of the thread mass, so as to permit more thread to be drawn therefrom. Immediately upon the cessation of the thread drawing movement, the two pawls 26, 27 receive between their teeth 31, 32 whatever tooth 9 may be directly thereabove.

It is evident that in operation the coiled springs 3 1 tend to keep the teeth 31, 32 close up against the member 8, and as soon as the feeding of the thread ceases, the teeth 31, 32 snap up into adjacent spaces 9 between some certain tooth 9 and engage the opposite edges of said tooth.

The wire loops or eyes 23, 23 are positioned at just the proper point above the upper end of the body member 16 to permi the engagement thereof by said body member upon upward movement of said tension or feeding member 15.

Having thus described one illustrative embodiment of my invention, I desire it to be understood that although specific terms are ciployed, they are used in a generic and descriptive sense and not for purposes of limitation, the scope of the invention being set forth in the following claims.

Claims:

1. A braiding carrier for braiding machines adapted to receive a rotatable thread package, and a pair of structurally distinct, movable members, one of which prevents movement of the thread package in one dircction of rotation and the other of which prevents movement of the thread package in the opposite direction, and means to release the thread package.

2. A braiding carrier for braiding machines adapted to receive a rotatable thread package, a pair of separate, movable members, one of which prevents movement of the thread package in one direction of rotation and the other of which prevents movement of the thread package in the opposite direction, and means to release the thread package from the control of said members when the thread tension reaches a predetermined extent.

8. A braiding carrier for braiding machines adapted to receive a rotatable thread package, the support for said package being provided with spaced, circumferential formations, and a pair of opposite structurally separate members adapted to engage opposing edges of a formation, thereby to prevent rotative movement of the thread packin either direction.

4. A braiding carrier for braiding machines adapted to receive a rotatable thread package, said package having a bobbin, a face whereof is provided with a toothed formation, and opposing pawl-like separate members adapted to engage said formation substantially simultaneously and prevent rotative movement of the thread carrier in either direction.

5. A braiding carrier for braiding machines adapted to receive a rotatable thread package, said package having a bobbin, a face whereof is provided with a toothed formation and a pair of separate pawls adapted to engage opposite edges of the respective teeth, thereby to prevent rotative movement of the thread bobbin in either direction.

6. A braiding carrier for braiding machines adapted to receive a rotatable thread package, said package having a bobbin, a face whereof is provided with a toothed formation and a pair of structurally separate pawls adapted to engage opposite edges of the respective teeth, thereby to prevent rotative movement of the thread bobbin in either direction, together with means to remove said pawls substantially simultaneous ly from engagement with a tooth when a predetermined extent of thread tension has been reached.

7. A braiding carrier having a spindle whereon a bobbin with a thread mass may be received, a face of said bobbin being provided with a circular toothed member, a pair of structurally distinct pawls adapted respectively to engage opposite edges of the same tooth of said member to prevent movement of the thread mass in either direction.

8. A braiding carrier having a spindle whereon a bobbin with a thread mass may be received, a face of said bobbin being provided with a circular toothed member, a pair of structurally distinct pawls adapted respec tively to engage opposite edges of the same tooth of said member to prevent movement of the thread mass in either direction, and means to release said pawls substantially simultaneously from said tooth.

9. A braiding carrier for braiding machines adapted to receive a rotatable thread package, a support for said package being provided with spaced circumferential formations, a pair of opposing members adapted to engage opposing edges of a formation, thereby to prevent rotative movement of the thread package in either direction, and means to release earlier than the other that one of said pair of opposite members that is the leading member in the direction of rotation of the braiding carrier.

10. A braiding carrier for braiding machines adapted to receive a rotatable thread package, and a pair of structurally distinct, movable members, one of which prevents movement of the thread package in one direction of rotation and the other of which prevents movement of the thread package in the opposite direction, and means to release the thread package, the movement of said members being slightly differential with respect to each other.

11. A braiding carrier for braiding machines adaptcd to receive a rotatable thread package, a pair of separate, movable members, one of which prevents movement of the thread package in one direction of rotation and the other of which prevents movement of the thread package in the opposite direction, and means to release the thread package from the control of said members when the thread tension reaches a predetermined extent, the movement of said members being slightly differential with respect to each other.

12. A braiding carrier for braiding machines adapted to receive a rotatable thread package and a pair of structurally distinct movable members, one of which acts as a thread-let-ofl pawl and the other of which acts as a thread-wind-upprevention pawl.

13. A braiding carrier for braiding machines adapted to receive a rotatable thread package and a pair of structurally distinct movable members, one of which acts as a thread-let-ofi pawl and the other of which acts as a thrcad-Wind-up-prevention pawl, and means to release the let-oil? pawl when the thread tension reaches a predetermined point.

14. A braiding carrier for braiding machines adapted to receive a rotatable thread package, a support for said package provided with spaced, circumferential formations,

a pair of opposing pawl-like members adapted to engage opposing formation edges, thereby to prevent rotative movement of the thread package in either\ direction, a tension controlling member adapted to be moved by the thread on its Way from the thread support to the Work, and provisions whereby said tension controlling member acts upon one of said opposing members slightly prior to acting upon the other.

In testimony whereof, I have signed my name to this specification.

ROGER W. HALE. 

